I using Gmail for both my Gmail account and my roadrunner account and it shows up as the magnifying glass at the top of both. I did notice that your screenshot shows you are attempting to share. Maybe that's what is happening.

Same exact thing is happening to me. The magnifying glass in my verizon e-mail appears very briefly then disappears, but it still shows up in my work e-mail account. I would appreciate any assistance. i am truly baffeled